Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4251347 | White mineral oil made by two stage hydrogenation | Maurice K. Rausch, Henry Erickson, by Doris Erickson, executor, Gerald E. Tollefsen | 1981-02-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4251347 | White mineral oil made by two stage hydrogenation | Maurice K. Rausch, Henry Erickson, by Doris Erickson, executor, Gerald E. Tollefsen | 1981-02-17 |